Improvement in organ-pipe attachments to piano-fortes



2 Shets--Sheet I. CURDLEY. rgan-ppe Attachments to Pianoforte's.

Patented Aug. H, 874.

FIG, 2

WITNESSESI 92W INE GRAPHIC C0. FHOT0-L|TH.39& 4-1 PARK PLACE,

2 Sheets--Sheet 2.. l. CURDLEY.

luga'n-pi-pe Attachments Atu Pianofortes.

N0.l54,022, Patenfed Aug.11,187'4.

VVITNESSESI INVENTOR:

` v JBM/@Attornei/s.

yUNITEn STATES PATENT OFFICE.

JAMES CORDLEY, OF ADRIAN, MICHIGAN.

IMPROVEMENT IN ORGAN-PIPE ATTACHMENTS TO PIANO-FQRTES.

Specification forming part of Letters Patent No. 154,022, datedAugust'll, .1874; application tiled March 7, 1873.

To all whom it may concern:

ment to the said piano-forte.

My invention consists, first, in the combination of one or more sets oforgan-pipes with suitable bellows and appliances for operating` thesame, in the manner hereinafter described 3 second, in the novelconstruction of a treble wind-chest upon a small scale, whereby thepipes are located under their relative keys, thereby dispensing with theordinary appliances heretofore used for the purpose of opening thevalves, and in the location of the pipes in an inverted position underthe piano-forte, whereby the original tone of said piano-forte ispreserved; third, in the novel construction of an adjustable spring,whereby the pressure upon the bellows is regulated; and, in connectionwith said spring, the novel construction of suitable tuning-tubes, andthe parts belonging thereto, whereby the same are operated, thusenabling the performer to conveniently and rapidly tune the pipes.

In the accompanying drawings, Figure 1 is a perspective view of thepiano-forte and flute attachment which forms the subject of thisinvention. Fig. 2 is a sectional perspective view of some of theoperating parts. Fig. 3 is a horizontal section of the bellows, and aportion of the ilute attachment, the plane of section being nearthe/upper part thereof. Fig. 4 is a perspective view of a section of aflutepipe, showing the tuning-tube and the thumbshaft.' Fig. 5 is aperspective view of a section of a metallic pipe, showing a similartunin g-tube and thumb-screw. Fig. 6 is a top view of the adjustablespring. Fig. 7 is a separate perspective view of the llute attachment.Figs. 4, 5, and 6 are on a larger scale.

A is the piano-forte; A', the keys belonging thereto. Bis the caseinclosing the attachment. M is the wind-chest; c, the valves belongingthereto. a a W are the appliances whereby the keys are made to open thevalves. M is the throat. D Dl represent thepipes. J is thepressure-feeder. Gis thepedal whereby the same is operated. J is thepressure-bellows, and receives its wind from the pressurefeeder J, whichwind inflates said bellows J Suitable valves K K are provided to preventany return of the wind thus transmitted by the pressure-feederJ. Thepressure-bellows J bein g thus inflated, and by means ofthe adjustablespring E R F E F pressed inward, the wind is pressed through thewind-sto ck V into the windchest M, and the keys A being presseddownward,the valve cis opened, causingthe wind to pass through thethroat M into thepipes D D', whereby they are made to sound in unisonwith the piano-forte. L is a regulating-valve, which is made to openwhenthe pressure-bellows J becomes filled with wind, thereby preventingany undue pressure upon said bellows. The adjustable spring (which isshown detached in Fig. 6) is located on the inner side of the middleboards, the lever E being held in position by means of the thumb-screwI, said thumb-screw passing through a slot in the middle board S, andoperated upon the front side of said board, as shown in Figs. l and 3.In Fig. 4, D is a perspective view of a section of a flute-pipe, showingthe tuningtube I and thumb-shaft o, whereby the pipes are tuned. In Fig.5, D' is a similar view of a section of a metal pipe, showing itstimingtube P and thumb-screwl o. Said thumbscrews may be used to operateeither of the above-named tuning-tubes when desirable.

As the tune of all organ-pipes is changed by and with the temperature,it becomes necessary, in order to make this invention successful, thatsome device be used whereby the pipes may be conveniently and rapidlytuned therefore, when the temperature changes only a few degrees, thepipes are tuned by increasing or reducing the pressure upon thepressure-bellows J by means of the adjustable spring mentioned, and whengreater changes of temperature take place the said pipes are tuned byraising or lowering the tuning-tubes by means of the appliances abovenamed. l

also contemplate using the tuning-tubes Without the said appliancesabove named when desirable. The tuning-tubes may be raised or lowered ina body by means of a bar of Wood runnin g between them, and suitablyconnected, so as to elevate the tubes by raising,` either end of thebar.

What I claim as new is- 1. The Wind-chest M and levers YV, incombination with the valves c, throat M', pins a a',

Wind-stock V, bellows J J', valves K, K', and L, pedal G, and middleboard S, as shown and described, for the purpose set forth.

2. The levers E E' ,l1inge R, spring` F, roller F', and thumb-screw I,in combination with the bellows J J and middle board S, as shown anddescribed, for the purpose specified.

3. The combination and arrangement of the tuning-tubes P P', shaft o,and thumb-screw o', as shown and described, for the purpose specified.

JAMES CORD LEY.

Vitnesses:

J AMES THOMSON, HEMAN Looms.

